Medical device with controlled reservoir opening
First Claim
1. An implantable medical device for the controlled release of drug molecules comprising:
- a substrate;
at least two reservoirs in the substrate;
release system disposed in the reservoirs, the release system comprising drug molecules for release; and
discrete metal reservoir caps positioned over or within openings in the reservoirs, wherein release of the drug molecules from the device is activated by disintegration of the reservoir cap and the disintegration of the reservoir cap is actively controlled.
0 Assignments
0 Petitions
Accused Products
Abstract
Implantable medical devices are provided for controlled release of drugs. In one embodiment, the device comprises a support structure; two or more discrete reservoirs provided in spaced positions across at least one surface of the support structure; and a release system loaded in each of the reservoirs, the release system including drug molecules dispersed in a degradable matrix material, wherein release of the drug molecules from the reservoir is controlled by in vivo disintegration of the matrix material. In another embodiment, the device comprises a support structure; two or more discrete reservoirs provided in spaced positions across at least one surface of the support structure; and a release system loaded in each of the reservoirs, the release system including drug molecules dispersed in a non-degradable matrix material, wherein release of the drug molecules from the reservoir is controlled by in vivo diffusion of the drug molecules from the matrix material.
153 Citations
30 Claims
-
1. An implantable medical device for the controlled release of drug molecules comprising:
-
a substrate;
at least two reservoirs in the substrate;release system disposed in the reservoirs, the release system comprising drug molecules for release; and discrete metal reservoir caps positioned over or within openings in the reservoirs, wherein release of the drug molecules from the device is activated by disintegration of the reservoir cap and the disintegration of the reservoir cap is actively controlled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A microchip device for the controlled release of drug molecules comprising:
-
a substrate; at least two reservoirs in the substrate, wherein each reservoir has at least one opening defined in the substrate; release system disposed in the reservoirs, the release system comprising drug molecules for release; and
at least two discrete electrically conductive reservoir caps, each reservoir cap closing off the opening defined by a respective reservoir,wherein release of the drug molecules from the device is activated by disintegration of the reservoir cap by direct application of an electrical potential through the reservoir cap. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
-
-
23. A medical device comprising:
- a substrate;
at least two discrete reservoirs provided in spaced positions across at least one surface of the substrate; discrete reservoir caps covering the at least two reservoirs; and control circuitry for selectively disintegrating the reservoir caps to open the reservoirs;
wherein the reservoir caps comprise a metal film.
- a substrate;
-
24. A device for use in medical diagnostics comprising:
- a substrate;
at least two discrete reservoirs provided in spaced positions across at least one surface of the substrate; a diagnostic reagent disposed in the reservoirs;
discrete reservoir caps covering the at least two reservoirs; and
control circuitry for selectively disintegrating the reservoir caps to open the reservoirs;
wherein the reservoir caps comprise a metal film.
- a substrate;
-
25. A medical device comprising:
- a substrate;
at least two discrete reservoirs provided in spaced positions across at least one surface of the substrate; discrete reservoir caps covering the at least two reservoirs; and control circuitry for selectively disintegrating the reservoir caps to open the reservoirs, wherein the reservoir cap disintegration comprises dissolving into solution, or forming soluble ions or oxidation compounds, upon application of an electric potential generated by the control circuitry. - View Dependent Claims (26, 27, 28, 29, 30)
- a substrate;
Specification